US2629900A - Drawing-head of spinning machines - Google Patents

Drawing-head of spinning machines Download PDF

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Publication number
US2629900A
US2629900A US765839A US76583947A US2629900A US 2629900 A US2629900 A US 2629900A US 765839 A US765839 A US 765839A US 76583947 A US76583947 A US 76583947A US 2629900 A US2629900 A US 2629900A
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US
United States
Prior art keywords
roving
fibres
rollers
drawing rollers
cheeks
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US765839A
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English (en)
Inventor
Lemaire Jacques Philippe
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Individual
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Individual
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Filing date
Publication date
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Publication of US2629900A publication Critical patent/US2629900A/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/72—Fibre-condensing guides

Definitions

  • the invention relates to the drawing-heads of spinning machines and has for its object to improve said drawing-heads so as to enable them to carry out the condensation of rovings in view of obtaining high drafting as well as improving the quality of the yarn.
  • This dispersion which is more or less marked, according to the nature and the length of the fibres forming the roving, makes spinning more diflicult and decreases the quality of the yarn produced.
  • This concentration or condensation has hitherto been mainly effected by means of channel guides provided with converging turned up edges or by means of funnel-like guides whose upper part is allotted for the passage therethrough of the roving and whose reduced ends extend between the drawing rollers up to their nipping line.
  • the roving fed through such guiding -members leaves thersame in a condensed state and it enters in a like condensed state between the drawing rollers.
  • the roving cannot expand if it is caused to pass through channels of the aforesaid type; it is too much enclosed by the side and bottom walls; the substantial and extended friction to which it is submitted at the contact thereof hinders its untwisting and unmatting and makes it irregular, and the irregularities are obviously the more marked inasmuch as, in order to obtain a more condensed yarn, the transversal sectional area of the channel has been more reduced near the drawing rollers.
  • the improvement is essentially based on the idea of narrowing the roving, by condensing same, and then guiding the roving, thus narrowed, between the usual drawing rollers, very close to the nip thereof, by means of condensing walls acting upon the roving, solely in the direction of its width, while every freedom is left thereto in its vertical plane, this being possible on account of the fact that the bottom or wall connecting the side condensing walls to each other is done away with for that purpose.
  • cheeks are constituted by triangular plane surfaces and mounted, wedge-like, on each side vmoving forward-along with the roving l, enter of the roving, at the penetration point of the latter between the drawing rollers, very closeto said rollers, though without them.
  • Fig. l is a perspective view of the roving condenser constructed in accordance with the very features of the invention.
  • Fig. 2 is a side View of said condenser located in front of the drawing rollers, only oneof the condensing cheeks being shown.
  • Fig. 3 is a perspective view of the parts shown in Fig. 2, the top drawing roller being partly broken in order to show more clearly the arrangement of the condenser in front of the drawing rollers.
  • Fig, 4 is a perspective view showing the way of mounting the condenser according to the invention and Fig. 5 is a general view of a drawing system improved according to the invention.
  • the present condenser consists in the pairing of two cheeks 5, 6 of triangular shape, one on each side of the roving l in course of drafting, said roving coming from the usual feed rollers in the direction on the axis a--a substantially at right angle to the line b-b which joins the centers of the lower and top drawing rollers 8 and 9 and passes through the nip thereof.
  • the cheeks 5, 6 are mounted, wedge-like, close t0 the spot where the roving in the course of drafting engages between the drawing rollers and very close to them, but contact between the drawing rollers and with the lower parts 5 and 6' and the tips ,f of the cheeks is avoided.
  • These cheeks are inclined away from each other, forming together a dihedral angle, interrupted by a symmetrical straightening of their lower edge 5.' and 6', along a straight line c drawn from a point d (Fig.
  • the collecting of all the fibres of the roving in the corridor h thus forms a homogeneous bundle of well parallelized fibres, the width of which may be adjusted at will, according to the weight of the roving, the nature of the fibrous material and the number or count of the yarn required, by adjusting the distance between the parallel walls of the duct h.
  • Fig. 4. which shows a. manner of constructing and of mounting the condenser according to the invention, it will be apparent that the cheeks 5a. and Saare stamped in--sheet metal and shaped as shown at 5"a and 5*a and at 5'a and 6"a so as to be secured with the parts 5" and 6', by means of rivets l2A or otherwise, on a bar I3, mounted as the bars of the well known roving transverse-guides used in the drawing systems of spinning ⁇ machines.
  • a condensing device comprising two spaced side walls or cheeks. each consisting of a plate bent along a line to form two substantially triangular portions having an obtuse angle between them, said plates being supported symmetrically close to the drawing rollers of the spinning machine with one of the triangular portions of each of the plates in parallel relationship and the other triangular portion of each of the plates in diverging relationship, the apices of the parallel triangular portions being disposed close to the nipping line of the drawing rollers.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US765839A 1941-06-24 1947-08-04 Drawing-head of spinning machines Expired - Lifetime US2629900A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR231869X 1941-06-24

Publications (1)

Publication Number Publication Date
US2629900A true US2629900A (en) 1953-03-03

Family

ID=8882456

Family Applications (1)

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US765839A Expired - Lifetime US2629900A (en) 1941-06-24 1947-08-04 Drawing-head of spinning machines

Country Status (4)

Country Link
US (1) US2629900A (fr)
BE (1) BE445432A (fr)
CH (1) CH231869A (fr)
GB (1) GB623366A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862190A (zh) * 2015-02-06 2016-08-17 立达英格尔施塔特有限公司 用于压实纤维网的纤维网料斗

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE972392C (de) * 1948-10-02 1959-07-09 Walter Guenther Streckwerk fuer Kammgarn-Spinnmaschinen

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB385739A (en) * 1931-12-03 1933-01-05 Anna Kym Krafft Improvements in and relating to drawing apparatus for spinning machines
US2230399A (en) * 1936-07-31 1941-02-04 Whitin Machine Works Yarn manufacture
US2385448A (en) * 1942-06-20 1945-09-25 Dominion Textile Co Ltd Condensing sliver

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB385739A (en) * 1931-12-03 1933-01-05 Anna Kym Krafft Improvements in and relating to drawing apparatus for spinning machines
US2230399A (en) * 1936-07-31 1941-02-04 Whitin Machine Works Yarn manufacture
US2385448A (en) * 1942-06-20 1945-09-25 Dominion Textile Co Ltd Condensing sliver

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105862190A (zh) * 2015-02-06 2016-08-17 立达英格尔施塔特有限公司 用于压实纤维网的纤维网料斗
CN105862190B (zh) * 2015-02-06 2020-09-29 立达英格尔施塔特有限公司 用于压实纤维网的纤维网料斗

Also Published As

Publication number Publication date
CH231869A (fr) 1944-04-30
GB623366A (en) 1949-05-17
BE445432A (fr)

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